﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.PlatformAbstractions;
using System.IO;
using Swashbuckle.SwaggerGen.Generator;
using Swashbuckle.Swagger.Model;

namespace WebApi
{
    public class Startup
    {
        private readonly IHostingEnvironment _hostingEnv;
        public Startup(IHostingEnvironment env)
        {
            var builder = new ConfigurationBuilder()
                .SetBasePath(env.ContentRootPath)
                .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
                .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true);

            if (env.IsEnvironment("Development"))
            {
                // This will push telemetry data through Application Insights pipeline faster, allowing you to view results immediately.
                builder.AddApplicationInsightsSettings(developerMode: true);
            }

            builder.AddEnvironmentVariables();
            Configuration = builder.Build();
            _hostingEnv = env;
        }

        public IConfigurationRoot Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container
        public void ConfigureServices(IServiceCollection services)
        {
            // Add framework services.
            services.AddApplicationInsightsTelemetry(Configuration);

            services.AddMvc();

            services.AddSwaggerGen(c =>
            {
                c.SingleApiVersion(new Info
                {
                    Version = "v1",
                    Title = "NewBee.Core.RC2 API",
                    Description = "这是一个API示例",
                    TermsOfService = "Some terms ..."
                });

                //c.OperationFilter<AssignOperationVendorExtensions>();
            });

            if (_hostingEnv.IsDevelopment())
            {
                services.ConfigureSwaggerGen(c =>
                {
                    c.IncludeXmlComments(GetXmlCommentsPath());
                });
            }
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline
        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {
            loggerFactory.AddConsole(Configuration.GetSection("Logging"));
            loggerFactory.AddDebug();

            app.UseApplicationInsightsRequestTelemetry();

            app.UseApplicationInsightsExceptionTelemetry();

            app.UseStaticFiles();

            app.UseMvc(routes =>
            {
                routes.MapRoute(
                    name: "default",
                    template: "{controller=Home}/{id?}/{action=Index}");
            });
            
            app.UseSwagger();
            app.UseSwaggerUi();
        }

        private string GetXmlCommentsPath()
        {
            var app = PlatformServices.Default.Application;
            return Path.Combine(app.ApplicationBasePath, Path.ChangeExtension(app.ApplicationName, "xml"));
        }
    }
}
